Lifting jack for motor vehicles and other vehicles



Sept. 2, 17930. M. KRU'sE i 1,774,926

LIFTING' JACK FOR MOTOR VEHICLES lAND OTHER VEHICLES Filed oct. 21. 1929i Patented Sept. 2i,

` vfum-'ir"ED PATENT oFF-leef@ lvrn'ns Knuslfr or lsuennsnnoex; nounou,ENGLAND .This lnvelion'relatjs. t@ lifting jaks, for

fLrFTInG ,monroe 4Morony 'VEHICID-E.SAlvi?v VOTHER vnr-trenes'applicati@'filed october' 21, i929, seriiiroi 401,232, and@Great.Britainniigusfl21, 192s.

motor vehicles and other vehicles," yof the kind, permanently attachedtoan axle.- of, rkor under, the vehicle 'and' adapted, When 1iotfrequired, tolberl'oldedv up or raised ojil' the ground, and theyobject' of theinvention isjto produce a jack of thisl kindl Whichfoldsupinto avery small space,vand is, nevertheless, very ellicient, strong,easily operated, and cheap to manufacture. c Y The kindfof llifting jacktovvhiehithe i-nfventionv relatesk comprlsesa basel or foot, a`plurality of toggle levers, oi: lWhich two or more, areconnected attheir endsremotefrom ltheir common pivotsto the saidibaseand the` othertwo or more levers are 'connected-at their corresponding ends directly'or indirect.

ly` (such as by a brac-ketor clip) `to the axle 0r otherpartof thevehicle,fa`nu t mounted on or integral With thecommonpivotofone pair oflevers,a collar mounted Von. or inf tegral` Withfthe common pivotoffthe"0ther f fp air of levers, a screvvengaging in! the nut l and.revoluble inlbutincapable .of axialmovei f the" screvv whereby thetoggleflevers maybe when isfdesired'v to fjaclrup. l

vAceordir-ig to this invention and order to V.avoid having to. turn thescrew. argre'at ble in butvincapable of, axial movenntin Y. thesaidsleeveand-the screvvjalsohasaheadY 40 with a recess or. the like;iat Yone 'end j forf-len- ,gagement With a key orfspanner,thefser'evvsection likethefteeth f a gaged by thedetent. Elastic means.are pro-Q. l videdY for causing the toggle `levers toi :'COl- 50i-lapsefled Merrell? retain the basel-@13E feb* l.:

threaded portion of 'the` screvvVV engaging in the said nut., Or the1sleeveg may be i `dis- ,1 pensed With; if that part o f the screvv,1jnprovided with the vscrewVV thread,VL bemade grooves of angular ,vvithaVnumber of annular saw forbelng-enoff the` ground,and loeking meansareialso Voron'the ground When the jacklis to be; used.

Andin order that the invention may be readily 4und'erstood andjeasilycarried into panying, drawings, of which :,-v

F gure 1 isa. sectional side elevation of one c'ons'f true-tiony oflifting jack adapted to be VYclamped to the axle o'a motor vehicle.`vFigure 2 -is an end-elevation'thereoff l Figure 3 is: an end view ofacollarhaving gud'geons toreceive afpair vof toggle'leversV andYfurnished in the bore With a f e,ather adaptedto engage in al feathervvayin a sleeveA invvhich the plain. part of the fs'c'reW Figure-5 is 1al section onfthe `line AvV-'V, i

rangement of' the` return springs;

l ,Inl ycarryin efechreference Will vbe madent'o the accmf' lthefinventionintoeffectnand i' i ias'shovvnfin -igu'res'lfand Zelttheaccompanylngdravvings, the base or shoe a consists of asubstantially`Hat horizontal' flange and i,

)projecting lugs Z) each having two transverse hleS Siti-lated @Short@listacfapart'a'ndmade quidislanb from therese; f lugsl may beoonnectedto the-shoe by a ballf and-soeletjpintfor thelike angularinovem'entitosuit: inequalitiesjofthe y 1` ground 'and preventv undue`stress in such la easej'where the groundis not mounted 'onrvetslorstuds e in' these holes v A Ol-,Slfd lrflf WO PafS, f' '50g-g1@I'f desired,` the level.' "Pivotally flevers df 0l ande eandftheupperend of each-lever ofthe pair' 'marked e je is pivotallygconnected" to agudgeni g on' a nut la," vandl thecorresponding' pivotally connected, as4.shovvn in Figures and, v3, tq Vvgudfgefofn Vz'. on. a eoll'arfc'.A l

larly,f;t'li refaretvvejp'airs, of upper togggle nds; Q fftlle sZ'Z- anoffvvhch theo'uter er lower f, v .Pairllllare pivetally'connected tgeonsl gef the nuth and the outer l 'theothenpairf of levers m are y,.onnected. to the collar c. T The upper or inner leversZ Z and m marepivotally'mounted on ends ofthe upper pairs of toggle studsorgudgeons n arranged close together v of the jackie fixedl at each endofa clip s! Y (of which only one is shown in 'dotted lines) kto atogglelever Zand m,

. on a clip 0 for fixing on the axle of the vehiends of the said coiledaround the gudgeons The axle such `as marked 17,1 of amotorjvehicle isasusual ofsubstantially H section and the clipfo 'is provided on eachkside with' a lug having two holes for the pivots yor studs al of thetoggle levers vZ Z and m' fm. 'A table or plat- 'f form of the clip fonwhichr` the lower side of the axle t rests, has va Vfixed or integralhookzthe lower y 'w is vfixed tothe platform by studs screws or shapedjaw o toppar'tly embrace one side of flange oftheaxle and a loose jawbolts to embrace the other side of the. axle flange.y .f l

' Ascrew, device, fordrawing the toggle levers together so as to causethem to assume a inoreor less upright position, thereby raisingthe axleand causingthe wheel to be lifted olf :the ground, comprisesa screwy,screwthreadedlat one end, plain towards theother fend and terminating ina head e. The head is `sleeve'4 in the collar le and in which thefscrewy may turn freely butV relative axial movement besuitably provided witha recess having a crossbar 3 therein o'r itis made square or otherwisefor being engaged by a key or sp anner or both. Mounted on the plain`part of this screw is a (Figures 1, y4'and 5) which isslidable vtweenthe screw g/ and the sleeve 4 'is preventfed'by 1 e of the screwand at the other end a vcollar 5 (Figurel): fixed onthe screw. yadjacent'to fthe endof the ,saidsleeve a vprovidedwitha feather-wayV 6'(Figures 4 ands).

Lcollar lo (Figures 1 and 3') towliicli thepairs the sleeve engaging atione end the head The sleeve', 4 is and this sleeve engages slidablyinthe of levers cZ andim are hinged,the"said'collar :beingprovided-withafeather or key v7V which .Y lengages ".The screwthreadedportion of the screw y' eny, gages in the nut' pairs Y n `rthatthetoggle levers may be` extended so that1 h to which thel 'other two oflevers .e and Z'are hinged. 1n order the shoe ral, touches kor `nearlyftouch'esthe ground preparatory tothe vjacking-up operation in order toavoid rotating thefscrew many 'enl l y; oftimefand labour, the shoe aisflowered byy times and, consequently, saving ajgood deal ipressingthereon with thefoot'orvthe key or spanner vand meansareprovided for temporarily lof'rzkingthey sleeve v4 to'thexlower col-'larl unitingthe upper toggle leversjm tothe formed with mesh-yrespectively, and is ring the sleeve and detent together.V

of waterproof material but not shown ytoggle levers ZZ. For thispurpose, the sleeve ,enableitto engage l.with and be disengaged fromrecesses in the sleeve. The detent is conveniently furnished with aflange at the top and at the bottom, the latter flange being providediwith a hole into which freely passes a stud 11 projecting from thecollar lo for hold- Or the detent 9 nia-y be screwed or riveted to oneend of a blade spring, the other end of which is similarly fixed to thecollar le. In order to get the Vnecessary length of the springend yetallow of the collar and detent being very close together, the spring maybe somewhat inthe nature of a three quarter elliptic spring or thespring may be made in two parts riveted together but the wire spring 10,as shown fixed, by being inserted in holes (Figure 3) at both ends tothe collar 7c and having its middle bend embracing a stud 12 on thedetent 9, is a simpler arrangement. In order to prevent dirt andmoisture from having accessto vthe screw, each pair of levers is coveredon one side by a plate or a cover suitably made in the drawings. Thelevers may be single and used in pairs', as shown, or they may be-ofchannel section or cased-in, if desiredand the outer endof the screw isprovided with a nut, or as shown, with acollar or washer 13 and a splitpin 14 or thelike to prevent it from being drawn out inadvertentlyfrom-the nut to which the toggle levers e and Z are hinged. Afterv'use,to release the jack and allow it to fold up against the axle, it is onlynecessary to remove the key or spanner and give the detent 9 a tap in anupward direction. This" removes it. from engagement with the serrati'on8 in thesleeve 4 and the springs r on the levers Z and m cause thelatter to extend laterally. A few turns of the screw then causes thelevers and the screw y' to assume a substantially parallelv conditionand the screw itself inthe feather-Way 6in the sleeve.

at one endto the bracket, a plurality of toggle levers connected at oneend to the base, a nut pivotally mounted on the free ends of'said leversonone side of the bracket and base, a screw engaging in the saidnutmeans for rotating the said screw. a collar mounted on a plain partof the said screw, the free ends of the Vsaid levers on theV other sideof the bracket being pivotally mounted on the said collar, means forallowing axial movement of said collar on the screw, and means forlocking the said collar in relation to the screw in different positionsalong theyscrew.,k V2. A lifting jack for. vehicles," comprisingV abracket for kattachment-to the vehicle and having pivots thereon, abase, four toggle levers pivotally connected at one end tothe pivots onthe said bracket, pivots on. said base, said toggle levers beingpivotallyconnected at vthe other end to the pivots on said base, a'nuthaving pivots thereon,the joints l of two toggle levers being ymountedon the pivots of the nut, a collar having pivots thereon, the joints oftwo other toggle levers beleverbeing pivoted on thecollar, the adjacentends of said levers having toothed quadrants meshing with eachother toensurethat both levers shall alwayshave-the same degree of angularity tothe vertical plane in ywhich ing mounted on the pivots ofthe collar,saidy vends of the toggle levers which are pivoted on the bracket beingformed with toothed intermeshing quadrantsv toiensure that both Yylevers shall always have the same degree of angularity to the verticalplane 'in' which".`

' thebracket and base are situated, a` screw engaging inrsaid nut, meansfor rotating the.

said screw, means for allowing axial movement of the screw 1n relationtothecollarwithout rotating vthe screw Vand meansorV j locking the saidcollar inrelation c. to they screw lin dierent positions along thescrew.

3.- Alifting jack forV vehicles, comprising a bracket for attachmenttothe vehiclehav-` ing pivots thereon, a base rhaving pivots thereon,toggle levers pivotally connected at one end to said pivots onithesaid.` brackets and at their opposite ends to the pivots on 1 vthe saidbase, a nut, a joint-oa toggle lever ll' being pivoted to the nut, ascrew engagmg 1 in the ysaid nut, 'means for .rotating said l screw, asleeve slidable but non-rotatablefon one end lof the screw,'means forpreventing relative axial movement of thes'crew and the sleeveincluding'transverse serrations in the saidvsleeve, acollarslidable `onthe said 'f sleeve and provided withpivots, the yjoint of a toggle leverbeing vpivoted on the collar, 1

p a detent lmounted'on the said collark and;

adapted to `engage in any one of the serra- Y tions in the saidsleeve,.and elastic'meansg; l

' 4. A liftingjack Y tending-to collapse the toggle levers andrey tainthem normally in position withr the base i ofi the ground.,y L

for vehicles','compr ising ak lbracket for attachment to '-the,vehicle,` a"

' base, toggle levers pivotally connected at one end to said bracketrand at their opposite'end to two vpivots on saidbase', a nut, thejointof Y one of thetog'gle levers being'pivoted onthe nut,a screwengagingin the said`nutmeansl vfor rotatingY said screw,` asleeveslidablebut not rotatable on one endofthesaid screw but permitting thescrew topre'volvetherein,A Y l means' forv preventingrelative axialmovey j j ment of the screw and sleeve,"transverse ser- .rations in itheysaid sleeve,` a collar slidable f l `on thesaid sleeve,- the joint ofanother.` toggle a the bracket and base are situated, a detent T mountedonfthe saidcollar andY adapted to engage'in any one of the serrations tothe said sleeve, and elastic meanstending to `col-V lapse the togglelevers and retain themnor- 7,. mally in position with the base oilk theJ ground. w

` MADS VKRUSE.r .f

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